Walter Brieden
33Patents
4h-index
38Co-inventors
59Inventor score
Filing activity: Dec 23, 1996 → Jul 27, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5760264A | Process for preparing optically active metallocenyl-phosphines | Chemistry; Metallurgy | 15 | Expired |
| US6716981B2 | Process for the preparation of N-(amino-4, 6-dihalo-pyrimidine) formamides | Human Necessities | 8 | Expired |
| US6156893A | Process for the preparation of (1S,4R)- or (1R,4S)- 4-(2-amino-6-chloro-9H-purin-9-yl)-2-cyclopentene-1-methanol | Chemistry; Metallurgy | 8 | Expired |
| US5744606A | Process for the preparation of optically active 3-quinuclidinol | Chemistry; Metallurgy | 7 | Expired |
| US6368850B1 | Process for the preparation of amino alcohols and derivatives thereof | Chemistry; Metallurgy | 3 | Expired |
| US6271376A | Process for the preparation of N-(amino-4,6-dihalo-pyrimidine) formamides | Human Necessities | 3 | Expired |
| US6137007A | Enantiomer compositions of (1R,4S)-1-butyrylamino-4-(hydroxymethyl)-2-cyclopentene | Chemistry; Metallurgy | 2 | Expired |
| US6773910B1 | Method of preparing (S)- or (R) -3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid | Chemistry; Metallurgy | 2 | Expired |
| US7229981B2 | Process for the preparation of aminoalcohol derivatives and their further conversion to (1R,4S)-4-(2-amino-6-chloro-5-formamido-4-pyrimidinyl)-amino)-2-cyclopentenyl-1-methanol | Chemistry; Metallurgy | 1 | Expired |
| US6262295A | Process for the preparation of a racemic or optically active 4-(hydroxymethyl)-2-cyclopentene derivative | Chemistry; Metallurgy | 1 | Expired |
| US6448402B2 | Process for the preparation of aminoalcohol derivatives and their further conversion to (1R, 4S)-4-((2-amino-6-chloro-5-formamido-4-pyrimidinyl)-amino)-2-cyclopentenyl-1-methanol | Chemistry; Metallurgy | 1 | Expired |
| US6723868B1 | Process for the preparation of aminoalcohol derivatives and their further conversion to (1R,4S)-4-((2-amino-6-chloro-5-formamido-4-pyrimidinyl)-amino)-2-cyclopentenyl-1-methanol | Chemistry; Metallurgy | 1 | Expired |
| US7074606B2 | Process for the preparation of (S) - or (R) -3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid | Chemistry; Metallurgy | 1 | Expired |
| US5877319A | Process for preparing 3-alkoxy-5-alkylpyrazin-2-amines | Chemistry; Metallurgy | 1 | Expired |
| US6011178A | Process for the preparation of 2-amino-4,5,3',4'-tetramethoxybenzophenone | Chemistry; Metallurgy | 1 | Expired |
| US5789596A | Process for the preparation of 1-acyl-4-arylpiperidines | Chemistry; Metallurgy | 0 | Expired |
| US5908935A | Process for the preparation of 1-Acyl-4-arylpiperidines | Chemistry; Metallurgy | 0 | Expired |
| US8501967B2 | Process for the preparation of enantiomerically pure 1-substituted-3-aminoalcohols | Chemistry; Metallurgy | 0 | Active |
| US7553652B2 | Process for the preparation of (S)- or (R)-3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid | Chemistry; Metallurgy | 0 | Expired |
| US6433170B1 | Method for producing 4-[2',5'-diamino-6'-halopyrimidine-4'-yl)amino]- cyclopent-2-enylmethanols | Chemistry; Metallurgy | 0 | Expired |
| US5939549A | Process for the production of 1,4,5,6-tetrahydropyrazine-2-carboxylic acid amides | Chemistry; Metallurgy | 0 | Expired |
| US6787347B2 | Process for the preparation of amino alcohols and derivatives thereof and microorganisms useful in process | Chemistry; Metallurgy | 0 | Expired |
| US5998618A | Process for preparing 3-alkoxy-5-alkypyrazin-2-amines | Chemistry; Metallurgy | 0 | Expired |
| US6160115A | Process for preparing N-[5-(diphenylphosphinoylmethyl)-4-(4-fluorophenyl)-6-isopropylpyrimidin -2-yl]-N-methylmethanesulfonamide | Chemistry; Metallurgy | 0 | Expired |
| US6524844B2 | Process for preparing optically active 1-amino-4-(hydroxymethyl) cyclopent-2-ene derivatives | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.